Home / 15,430.43-21,293.97-8,356.88

Finding the Fourth Proportional to 15,430.43, 21,293.97 and 8,356.88

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Solution

The fourth proportional to 15,430.43, 21,293.97 and 8,356.88 is: 11,532.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.43 : 21,293.97 = 8,356.88 : x
  2. Step 2: Convert to fraction form
    15,430.43/21,293.97 = 8,356.88/x
  3. Step 3: Cross multiply
    15,430.43x = 21,293.97 × 8,356.88
  4. Step 4: Simplify right side
    15,430.43x = 177,951,152.01
  5. Step 5: Solve for x
    x = 177,951,152.01/15,430.43
  6. Step 6: Final answer
    x = 11,532.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.